DL-Pyroglutamic Acid | CAS NO:149-87-1 |
Chemical Name | DL-Pyroglutamic Acid |
Molecular Structure |
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Molecular Formula | C5H7NO3 |
Molecular Weight | 129.11 |
Characteristics | White crystals or crystalline powder |
Packing | 25㎏/drum,25㎏/carton |
Quality Standard | AJI92/USP28/EP5/FCCIV |
Specification
Specific rotation[a]D20° | 0° —±0.5° |
Melting point | 181℃ |
Heavy metal(PB) | ≤10ppm |
Iron(FE) | ≤10ppm |
Loss on Drying | ≤0.2% |
Arsenic(AS2O3) | ≤1ppm |
Assay | 98.5% —100.5% |
Residue on ignition | ≤0.1% |
Other amino acid | Chromatographically not detectable |
Chloride | ≤0.02% |